TLC calculation in single phase testing mode
Issue
User would like to know how the Transformer Loss Compensation is calculated in Single phase testing mode of ION 7550/7650 or ION8600/8650
Product line
ION7550
ION7650
ION8600
ION8650
Environment
TLC Calculations
Cause
Understanding the calculations will allow users to follow Transformer Loss Compensation measurements while testing is enabled.
Resolution
Single-phase test option lets you use a single-phase source and view three phase. When the single-phase testing is enabled, the meter will calculate the V2 Average, V4 Average and I2 average from the single-phase source according to the following calculations:
For a Wye system:
For a Delta system:
The above parameters are then used to calculate the losses according to the following:
You can also connect a single‐phase source voltage input in parallel and the current in series to simulate a three‐phase source without toggling to the single-phase mode.
Publié pour: Schneider Electric Belgium
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